NYC HPD

What it does

Provide an address, BBL, or BIN and get the HPD record for a residential building. The skill first checks the building class — HPD only applies to residential classes (A, B, C, D, R, S). For qualifying buildings, it queries violations, open violations, complaints, and registration data. Class C (immediately hazardous) violations are flagged prominently, and open violations are grouped by severity class.

Install

Claude Desktop:

1. Open Customize → Browse plugins
2. Click + → Add marketplace from GitHub
3. Enter AlpacaLabsLLC/skills-for-architects
4. Install the Due Diligence plugin

Claude Code (terminal):

claude plugin marketplace add AlpacaLabsLLC/skills-for-architects
claude plugin install 00-due-diligence@skills-for-architects

Or symlink just this skill:

git clone https://github.com/AlpacaLabsLLC/skills-for-architects.git
ln -s $(pwd)/skills-for-architects/plugins/00-due-diligence/skills/nyc-hpd ~/.claude/skills/nyc-hpd

Data sources

Source	Dataset ID	What it provides
PLUTO	64uk-42ks	Address resolution, BBL/BIN, building class
HPD Violations	wvxf-dwi5	Violation class (A/B/C), inspection date, description
HPD Open Violations	csn4-vhvf	Pre-filtered currently open violations
HPD Complaints	ygpa-z7cr	Complaint date, status
HPD Registrations	tesw-yqqr	Registration ID, owner name, expiry date

Key fields returned

• Building registration — registration ID, owner, expiry date
• Open violations by class — Class C (immediately hazardous), Class B (hazardous), Class A (non-hazardous)
• Full violation history — class, inspection date, description
• Recent complaints — date, status, status date

Sample output

Generated from: /nyc-hpd 120 Broadway, Manhattan

## HPD — 120 Broadway, Manhattan

**Building Class:** O5 (Office, 25+ stories)

**HPD records not applicable.** This building is classified as non-residential (Class O5). HPD violations, complaints, and registration requirements apply only to residential buildings (Classes A, B, C, D, R, S).

For residential property lookups, try a residential address.

Source: [HPD Violations](https://data.cityofnewyork.us/Housing-Development/Housing-Maintenance-Code-Violations/wvxf-dwi5)